Homebrew PCBs

At 12:11 PM 18-11-13, you wrote:
>
>
>I do not think you want to use an aperture to get a round beam since 
>it will waste power.

Expander-round aperture-focusing is the easy way for an amateur.

>  As you suggested, cylindrical lenses will allow you to selectively 
> focus X & Y independently.
>
>Mirrors curved in one plane will also work.
>
>Bertho

Curved mirror will do the job, but I think is hard to find.
If you know a cheap 'one piece' producer, let me know, please.
I'd like to round-up a red laser.
Cristian